In the Series Edit
Karkinos is a calm thinker and not easily provoked. His purple Heroic Tribe form, "Lernaea", employs some sort of corrosive gas, or similar material, as a means of attack. It is implied that this power can destroy entire solar systems. Apparently, he is capable of resurrection. Lernaea's main ability is thought to be Life, then revealed to be Restoration.
Karkinos' contract with the Silver Tribe contains 4 Labors.